The Bobcat 763 is a bit older, so you need to check the flow rate on your specific model first. Try to look for attachments from companies like Bradco or the official Bobcat brand.
It's the 709 backhoe and used is your best option - here's a link to several BH 709 options for your 763. $4-5K not too $$ but if you need to use your SS you may want to look into a Mini Excavator.
Been eyeing the used 709 units up for a couple of years. average cost is about $3500-$4k here with bad seat and maybe some old hoses could be a little less. I see 2 styles of supports. Vertical stabilizers and true outrigger arms the fold out. The fold out type are superior. I have a 773 model